4 Vintage Bassick 6x2 Wheel Cast Iron Swivel Greasable Caster Set
These came off an old warehouse cart. Each caster weighs 12 1/2 pounds and rolls and swivels smoothly. Castor is 6 inches and diameter and 2 inches wide.
The plate is 4 1/2" x 6". Holes are centered 2 1/2" x 5" and 1/2diameter.